Implementation status of simultaneous inspections inside tunnels in NEXCO EAST ・ Status of tunnels where damage was confirmed
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- Implementation status of simultaneous inspections inside tunnels in NEXCO EAST ・ Status of tunnels where damage was confirmed
Implementation status of simultaneous inspection
It looks like we have carried out a simultaneous inspection of heavy structures such as jet fans in the upper part of the tunnel.
[Examples of major heavy structures subject to this simultaneous inspection]
Jet fan inspection status North Kanto Expressway Karasawayama Castle Ruins Tunnel (In-bound line)
Large sign
Joshinetsu Expressway Komoro tunnel (Out-bound line)
Tunnel information board
Tokyo Bay Aqua Tunnel (In-bound line)
Condition of tunnel where damage was confirmed
We have confirmed damage to the anchor bolts of the lining concrete and the anchoring part, but neither of them is a hindrance to customers' travel. In addition, emergency measures are taken for damaged parts, and heavy structure fall prevention wires (fail safe measures) are installed to enhance safety.
Kan-Etsu Expressway Kanetsu Tunnel (In-bound line) 4 out of 16 anchor bolts for supporting bracket anchorage
Yokohama Yokosuka Road Ikeda Tunnel Hanging bracket anchoring part anchor bolt dropped out of 8
【Related Links】
- NEXCO EAST
- Ministry of Land, Infrastructure and Transport